How to Compress a PDF to 100KB (Free, No Upload)
Plenty of portals — visa applications, exam registrations, government forms — cap PDF uploads at 100KB. A normal scanned document is many times that, so it bounces. Here's how to get under the limit without uploading your file to anyone's server.
How to compress a PDF to 100KB
- Open the free Compress PDF tool.
- Drop in your PDF.
- Choose a stronger compression level and check the output size.
- Download the smaller file — it's processed entirely in your browser, no upload, no watermark.
What shrinks the most
- Scanned documents (image-based PDFs) compress dramatically — these reach 100KB easily.
- Text-based PDFs are already small; if yours is over 100KB it's usually because of embedded images or fonts.
Still over 100KB?
- Remove pages you don't need. Use Split PDF to keep only the required pages — fewer pages, smaller file.
- Lower the scan resolution. If you're scanning, 150–200 DPI is plenty for a document and far smaller than 600 DPI.
- Compress in steps. Apply compression, check the size, and repeat at a stronger setting if needed.
Related sizes
Need a different target? The same tool gets you under 1MB for email or under 2MB for an upload portal.